Problema Solution
Joe has three times as many as Tom, and Tom has four times as
many as Mary. Altogether they have 153. How many has each?
Answer provided by our tutors
Let
x = the amount that Mary has
4x = the amount that Tom has (Tom has four times as many as Mary)
3*4x = the amount that Joe has (Joe has three times as many as Tom)
Altogether they have 153:
x + 4x + 3*4x = 153
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x = 9
Mary has 9.
4*9 = 36
Tom has 36.
3*36 = 108
Joe has 108.